﻿THE 
  MINING 
  AND 
  QUARRY 
  INDUSTRY 
  I908 
  39 
  

  

  diameter 
  from 
  15 
  inches 
  to 
  54 
  inches 
  or 
  even 
  larger 
  and 
  are 
  used 
  

   for 
  the 
  grinding 
  of 
  paint, 
  grain, 
  cement, 
  gypsum 
  etc. 
  The 
  chasers 
  

   are 
  stones 
  dressed 
  to 
  run 
  on 
  edge 
  on 
  a 
  platform 
  of 
  blocks 
  of 
  the 
  

   same 
  material, 
  and 
  are 
  used 
  in 
  grinding 
  heavier 
  material 
  such 
  as 
  

   quartz, 
  feldspar, 
  barite 
  etc. 
  Depending 
  largely 
  on 
  their 
  weight 
  

   for 
  crushing 
  the 
  fragments, 
  they 
  are 
  of 
  large 
  size 
  varying 
  in 
  diam- 
  

   eter, 
  as 
  produced 
  in 
  1908, 
  from 
  54 
  to 
  72 
  inches. 
  

  

  The 
  production 
  has 
  been 
  decreasing 
  steadily 
  for 
  some 
  years 
  

   owing 
  to 
  the 
  introduction 
  of 
  roller 
  mills 
  in 
  flour 
  making, 
  and 
  ball 
  

   mills, 
  emery 
  stones 
  and 
  other 
  improved 
  grinding 
  machinery 
  in 
  

   other 
  industries. 
  The 
  demand 
  for 
  millstones 
  is 
  now 
  largely 
  from 
  

   corn-grinding 
  mills 
  in 
  the 
  south 
  and 
  from 
  gypsum 
  and 
  plaster 
  

   mills, 
  while 
  chasers 
  are 
  still 
  used 
  in 
  quartz, 
  feldspar 
  and 
  barite 
  

   mills. 
  

  

  Millstones 
  varied 
  in 
  value 
  in 
  1908 
  from 
  $3 
  for 
  15 
  inch, 
  to 
  $45 
  

   for 
  54 
  inch 
  stones, 
  while 
  chasers 
  sold 
  for 
  $30 
  to 
  $70 
  varying 
  in 
  

   size 
  from 
  54 
  to 
  'J2 
  inches. 
  

  

  The 
  production 
  in 
  1908 
  amounted 
  to 
  $18,341 
  as 
  against 
  $21,806 
  

   in 
  1907. 
  The 
  number 
  of 
  millstones 
  made 
  was 
  871 
  and 
  chasers 
  182, 
  

   and 
  in 
  addition 
  a 
  small 
  production 
  of 
  blocks 
  and 
  disks 
  for 
  use 
  in 
  

   roll 
  crushers. 
  

  

  MINERAL 
  PAINT 
  

  

  Under 
  this 
  title 
  are 
  included 
  the 
  natural 
  mineral 
  colors 
  which 
  

   require 
  nothing 
  more 
  than 
  washing 
  or 
  grinding 
  in 
  their 
  prepara- 
  

   tion 
  for 
  the 
  market. 
  The 
  raw 
  materials 
  found 
  in 
  the 
  State 
  that 
  

   have 
  been 
  used 
  for 
  the 
  purposes 
  are 
  iron 
  ore, 
  ocher, 
  shale 
  and 
  

   slate. 
  New 
  York 
  is 
  also 
  one 
  of 
  the 
  leading 
  producers 
  of 
  artificial 
  

   pigments, 
  specially 
  those 
  made 
  from 
  lead, 
  but 
  the 
  crude 
  materials 
  

   are 
  mostly 
  derived 
  from 
  without 
  the 
  State. 
  

  

  The 
  Clinton 
  hematite 
  affords 
  an 
  excellent 
  base 
  for 
  the 
  manu- 
  

   facture 
  of 
  metallic 
  paint 
  and 
  mortar 
  color. 
  The 
  beds 
  with 
  a 
  rela- 
  

   tively 
  high 
  iron 
  content 
  are 
  employed, 
  as 
  they 
  possess 
  the 
  softness 
  

   and 
  uniformity 
  of 
  texture, 
  as 
  well 
  as 
  depth 
  of 
  color, 
  which 
  are 
  

   generally 
  sought 
  for. 
  The 
  mines 
  owned 
  by 
  C. 
  A. 
  Borst 
  at 
  Clinton, 
  

   Oneida 
  co. 
  and 
  those 
  of 
  the 
  Furnaceville 
  Iron 
  Co. 
  at 
  Ontario, 
  

   Wayne 
  co. 
  supply 
  most 
  of 
  the 
  ore 
  for 
  paint. 
  The 
  hematite 
  from 
  

   the 
  former 
  locality 
  belongs 
  to 
  the 
  oolitic 
  variety 
  and 
  that 
  sold 
  to 
  

   paint 
  manufacturers 
  carries 
  about 
  45 
  per 
  cent 
  iron. 
  The 
  ore 
  in 
  

   Ontario 
  county 
  is 
  of 
  fossil 
  character 
  carrying 
  about 
  40 
  per 
  cent 
  

   iron. 
  The 
  red 
  hematite 
  from 
  St 
  Lawrence 
  county 
  is 
  also 
  used 
  for 
  

   metallic 
  paint. 
  

  

  